Pinedale is an unincorporated community in Navajo County, Arizona, United States. The population is estimated around 400. The elevation is approximately 6,500ft and it is part of the Mogollon Rim mountain range.Pinedale was first known as Mortenson, after Neils Mortenson who established a Mormon settlement there in 1879. It was also known as Percheron, for the breed of stallions which Mortenson had brought with him. By 1888, however, the settlement was called Pinedale.The former Pinedale Elementary School is now a historic building.The road into Pinedale has the only covered bridge in Arizona.